// 设置变量
@bg-color: #b7d4a8;


*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font: bold 20px "courier";
}

#main{
  width: 360px;
  height: 420px;
  background: @bg-color;
  margin: 100px auto;
  border: 10px solid black;
  border-radius: 10px;

  // 开启弹性盒模型
  display: flex;
  flex-flow: column;
  align-items: center;
  justify-content: space-around;
}
#stage{
  width: 304px;
  height: 304px;
  border: 2px solid black;
  position: relative;
  #snake{
    &>div{
      width: 10px;
      height: 10px;
      background: #000;
      border: 1px solid @bg-color;
      position: absolute;
    }
  }
  #food{
    width: 10px;
    height: 10px;
    position: absolute;
    left: 40px;
    top: 100px;
    display: flex;
    flex-flow: row wrap;
    justify-content: space-between;
    align-content: space-between;
    &>div {
      width: 4px;
      height: 4px;
      background: #000;
      transform: rotate(45deg);
    }
  }
}
#score-panel{
  width: 300px;
  display: flex;
  justify-content: space-between;
}